<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>注册</title>
    <link rel="stylesheet" href="css/common.css">
    <link rel="stylesheet" href="css/login.css">
</head>
<body>
     <!-- 导航栏 -->
     <div class="nav">
        网页聊天
    </div>
    <!-- 主窗口区 -->
    <div class="login-container">
        <div class="login-dialog">
            <h3>注册</h3>
            <div class="row">
                <span>用户名</span>
                <input type="text" id="username">
            </div>
            <div class="row">
                <span>密码</span>
                <input type="password" id="password">
            </div>
            <div class="row">
                <button id="submit">注册</button>
            </div>
        </div>
    </div>

    <!-- 引入jquery -->
    <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
    <!-- 实现前后端交互的逻辑 -->
    <script>
        let submitButton = document.querySelector('#submit');
        submitButton.onclick = function() {
            //1.获取到用户输入的用户名和密码
            let username = document.querySelector('#username').value;
            let password = document.querySelector('#password').value;
            if(username == '' || password == '') {
                alert("当前输入的用户名或者密码为空！");
                return;
            }
            //2.发送ajax请求
            $.ajax({
                url: '/register',
                type: 'post',
                data: {
                    username: username,
                    password: password
                },
                success: function(body) {
                   if(body && body.userId > 0) {
                        alert("注册成功!");
                        location.assign('/login.html');
                   } else {
                        alert('注册失败！');
                   }
                }
            });

        }
    </script>
</body>
</html>